Study: Alzheimer's risk spikes 157% with heavy smoking - USATODAY.com

Study: Alzheimer's risk spikes 157% with heavy smoking - USATODAY.com:

"The study is the first to examine the long-term consequences of heavy smoking on Alzheimer's and vascular dementia, says the study's principal investigator, Rachel Whitmer, a research scientist with Kaiser Permanente in Oakland.
.... Compared with non-smokers, those who had smoked two packs of cigarettes a day increased their risk of developing Alzheimer's by more than 157% and had a 172% higher risk of developing vascular dementia — the second-most-common form of dementia after Alzheimer's. The research is published online in the Archives of Internal Medicine."